Reports, Where to Start?

Could someone point me in the right direction or where to start with the reports module? I have been searching for hours and playing with the module with 0 luck. I just want to create a simple report that displays “campaigns” and the number of accounts associated to those campaigns. Whenever I create a report I don’t have the option of adding anything to the “fields” or “parameters”

You drag and drop the fields from the left hand side.





I upgraded to 7.2 yesterday and love the new theme. I do however have a problem with the reports. The list of modules are missing. Any idea? I attached a screenshot.